refactor(style): type SymfonyStyle messages as strings and cells

SymfonyStyle modelled PHP's string|array message parameters, its array of
listing elements and its table headers/rows as PhpMixed, then normalised
and stringified them at every entry point. Take &[String] for the message
and listing parameters, Vec<Cell>/Vec<Row> for table (matching the
horizontal_table signature) and Vec<String> for the choice options, so the
is_array/is_iterable normalisation and the php_string helper both go away.

PhpMixed stays where PHP is genuinely mixed: the question answers returned
by ask/ask_hidden/choice, their validators, choice's string|int|null
default, and the progress_iterate elements.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/crates/shirabe-symfony-console/src/helper/symfony_question_helper.rs b/crates/shirabe-symfony-console/src/helper/symfony_question_helper.rs
index 5b4b3ba0..c971b5fd 100644
--- a/crates/shirabe-symfony-console/src/helper/symfony_question_helper.rs
+++ b/crates/shirabe-symfony-console/src/helper/symfony_question_helper.rs
@@ -138,7 +138,7 @@ impl QuestionHelperInterface for SymfonyQuestionHelper {
             let mut borrowed = output.borrow_mut();
             if let Some(style) = (*borrowed).as_any_mut().downcast_mut::<SymfonyStyle>() {
                 style.new_line(1);
-                style.error(PhpMixed::String(error.get_message().to_string()));
+                style.error(&[error.get_message().to_string()]);
 
                 return;
             }